You can use tool VB.Net to C# Converter 2.07
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rewrites your VB.Net project in C#. Variable names, comments, and inline comments are preserved. Converts the 101 Microsoft VB.Net Samples Succesfully. Free Download.
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For download check
http://www.soft32.com/download_26228.html
Also check other tools
http://www.e-iceblue.com/
http://www.topshareware.com/Instant-C-VB.NET-to-C-Converter-download-14943.htm
For page by page conversion check out
http://www.developerfusion.co.uk/utilities/convertvbtocsharp.aspx